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<?php $a = []; print $a ?? 'b1'; print "\n"; print $a ?: 'b2'; print "\n"; print $c ?? 'a1'; print "\n"; print $c ?: 'a2'; print "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iCCa0
function name:  (null)
number of ops:  18
compiled vars:  !0 = $a, !1 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    5     1        COALESCE                                             ~3      !0
          2        QM_ASSIGN                                            ~3      'b1'
          3        ECHO                                                         ~3
    6     4        ECHO                                                         '%0A'
    8     5        JMP_SET                                              ~4      !0, ->7
          6        QM_ASSIGN                                            ~4      'b2'
          7        ECHO                                                         ~4
    9     8        ECHO                                                         '%0A'
   11     9        COALESCE                                             ~5      !1
         10        QM_ASSIGN                                            ~5      'a1'
         11        ECHO                                                         ~5
   12    12        ECHO                                                         '%0A'
   14    13        JMP_SET                                              ~6      !1, ->15
         14        QM_ASSIGN                                            ~6      'a2'
         15        ECHO                                                         ~6
   15    16        ECHO                                                         '%0A'
         17      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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